Wednesday, 3 March 2021

Cranksets & Calculations











The Deore Crankset arrived and with a 32tooth front ring and 12-28 cassette, gives a range between 29.4 and 69.44 inches. A little low at the upper end for tarmac terrorism and catching riders, but plenty of torque for trailer towing and gravel stuff.  


Ideally, I’d be looking towards something in the high 70s. Will stick with it for now, unless a suitable, closer spaced option presents. 11-25 would give 33.0-74.9, which is arguably a better option. I took this opportunity to replace the chain and deep clean the drivetrain, since the existing KMC had done 1,000 plus. Besides there’s no sense in prematurely wearing cassette and new ring. I also noted that, despite the nickel finish and being fed wet lubes, it had become quite stiff and showed the ominous orange taint.   


Wintry conditions largely gone and while waiting for the new crankset, I whipped the Univega’s wheels out, given the frameset a more thorough waxing of its intimate areas and switched to the Schwalbe Billy Bonkers.

  

This also presented the ideal opportunity to give banish the congealed gloop, clinging to the cassette and Sun Race derailleur’s jockey wheels, using this Squirt Bike Cleaner Concentrate. Thankfully, the oily residue had done a good job of preserving the finish, so no call for the M16 Ride & shine M16 RIDE & SHINE | cycling-not-racing (sevendaycyclist.com) 


I’ve been getting the miles in on the fixed. Switching the Schwalbe Marathon Plus for the 42mm Continental Contact was a sensible move and I ordered replacement ceramic pads for its TRP Spyre stopper, so they’re in stock, when replacement’s next due.  


The Zefal Z11 bag is proving a very useful addition. Minimal sway (which is unusual for the bigger models, especially those tethering to the post via a single strap). The larger breed also doubles as a decent mudguard, protecting saddles and buttocks from cold, wet, slimy stuff.  


On the theme of transmissions, I’d returned from a ride, intending to simply tweak the chain tension, when I discovered some issues with the Fix-G HALO FIX G TRACK HUB | Seven Day Cyclist Tourin Tests Commuting side of the hub. Horsef*ckers! No matter, I switched back to the Aerorage wheel, until I’ve time to assess things properly.  


Oh well, might as well, give the transmission a good blitz, then feed it Squirt Low-Temperature Wax Chain Lube. Talking of the concentrate, this can be applied neat, as a degreaser, or diluted to make a bike wash.  


I’ve decanted neat into a chain cleaner receptacle, a 30/70 concentrate/water mix as a winter weight/early season bike wash. Like many concentrates, it can be applied to (a) the drivetrain via brush/chain bath, left for a few minutes, then agitated and rinsed. Or (b) poured over parts and left marinating for a few hours/overnight. This version pours easily in cold weather-noticeably so, compared with its otherwise impressive standard counterpart. SQUIRT LONG LASTING DRY CHAIN LUBE | cycling-not-racing (sevendaycyclist.com)  


Wax formulas aren’t the obvious choice for cold, wintry conditions. Indeed, I would reserve most for spring/summer. However, this low-temperature blend stoked my curiosity. Similarly, while wet lubes are the obvious default for wet/wintry conditions, they can also attract a fair bit of gunk.  


Purging this regularly (as you should) can be a tedious chore. Ignore it and there’s a very real risk of it grinding through expensive rings, cassettes, derailleur jockey wheels (and even cages). Waxy types require longer curing times but will simply scab off when leaden with contaminants. 


No need to scrub, or clean, just apply another layer and leave to cure.   

As the photos illustrate, I’ve gone this route with Ursula’s new chain, since I was there.  Also switched back to the Ravemen CLO6 Sensored Rear Light.RAVEMEN CL06 SENSORED REAR LIGHT | cycling-not-racing (sevendaycyclist.com) Fancied a formative “shakedown” blast to see how the new drivetrain components behaved and its CLO5 counterpart needed a charge.